Bubble

Bubble or Bubbles may refer to:

Physical bubbles

Arts and literature

Astronomy

Bubbles (video game)

Bubbles is an arcade video game developed by Williams Electronics and released in 1982. The player uses a joystick to control a bubble in a kitchen sink. The object is to progress through levels by cleaning the sink while avoiding enemies. The game received a mixed reception from critics.

Development was handled by John Kotlarik and Python Anghelo. Kotlarik wanted to create a non-violent game inspired by Pac-Man. Anghelo designed the game's artwork and scenario as well as a special plastic cabinet that saw limited use. Bubbles was not ported to any contemporary systems, but was later released as a web-based version and on home consoles as part of arcade compilations.

Gameplay

Bubbles is an action game with puzzle elements where the player controls the protagonist, a soap bubble, from a top-down perspective. The object is to clean a kitchen sink by maneuvering over ants, crumbs, and grease spots to absorb them before they slide into the drain. As the bubble absorbs more objects, it grows in size, eventually acquiring first eyes and then a smiling mouth. At the same time, sponges and scrub brushes slowly move around the sink, cleaning it on their own in competition with the player. Touching either of these enemies costs a player one life unless the bubble is large enough to have a complete face. In this case, the enemy will be knocked away and the bubble will shrink. Sponges and brushes can be knocked into the drain for bonus points, eliminating them from play. Two other enemies in the sink are stationary razor blades and roaches that crawl out of the drain. Contact with a blade is always fatal, while the bubble can safely touch the roach only while carrying a broom, which will kill the roach with one hit. The broom can be acquired by running over a cleaning lady who appears in the sink from time to time.

List of The Powerpuff Girls characters

This is a list of characters who appeared on the American animated television series The Powerpuff Girls, which aired on Cartoon Network from November 18 1998 to March 25 2005.

The Powerpuff Girls

Blossom

Offset

Offset may refer to:

Science and engineering

Wheel

A wheel is a circular component that is intended to rotate on an axle bearing. The wheel is one of the main components of the wheel and axle which is one of the six simple machines. Wheels, in conjunction with axles, allow heavy objects to be moved easily facilitating movement or transportation while supporting a load, or performing labor in machines. Wheels are also used for other purposes, such as a ship's wheel, steering wheel, potter's wheel and flywheel.

Common examples are found in transport applications. A wheel greatly reduces friction by facilitating motion by rolling together with the use of axles. In order for wheels to rotate, a moment needs to be applied to the wheel about its axis, either by way of gravity, or by the application of another external force or torque.

Etymology

The English word wheel comes from the Old English word hweol, hweogol, from Proto-Germanic *hwehwlan, *hwegwlan, from Proto-Indo-European *k^wek^wlo-, an extended form of the root *k^wel- "to revolve, move around". Cognates within Indo-European include Icelandic hjól "wheel, tyre", Greek κύκλος kúklos, and Sanskrit chakra, the latter both meaning "circle" or "wheel".

List of gear nomenclature

Addendum

The addendum is the height by which a tooth of a gear projects beyond (outside for external, or inside for internal) the standard pitch circle or pitch line; also, the radial distance between the pitch diameter and the outside diameter.

Addendum angle

Addendum angle in a bevel gear, is the angle between elements of the face cone and pitch cone.

Addendum circle

The addendum circle coincides with the tops of the teeth of a gear and is concentric with the standard (reference) pitch circle and radially distant from it by the amount of the addendum. For external gears, the addendum circle lies on the outside cylinder while on internal gears the addendum circle lies on the internal cylinder.

Pressure Angle

Apex to back

Apex to back, in a bevel gear or hypoid gear, is the distance in the direction of the axis from the apex of the pitch cone to a locating surface at the back of the blank.

Back angle

The back angle of a bevel gear is the angle between an element of the back cone and a plane of rotation, and usually is equal to the pitch angle.